Stimulated emission pumping spectroscopy via two-color resonant four-wave mixing

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.468826· OSTI ID:46413

Williams, S; Tobiason, J D; Dunlop, J R; Rohlfing, E A ^[1]

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1. Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551 (United States)

Using the {ital {tilde B}} {sup 2}{ital A}{prime}--{ital {tilde X}} {sup 2}{ital A}{prime} system of HCO, we obtain RFWM-SEP spectra that probe ground-state vibrational resonances lying above the low threshold for dissociation to H+CO. Varying the polarization of the input beams or PUMP rotational branch produce dramatic effects in the relative intensities of rotational lines in the RFWM-SEP spectra of HCO; these effects are well-described by our theoretical analysis. Finally, RFWM-SEP spectra of HCO resonances that are homogeneously broadened by dissociation are consistent with the theoretically predicted Lorentzian line shape; the full widths for these levels are in good agreement with those determined via unsaturated fluorescence depletion SEP.

• OSTI ID: 46413
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 21 Vol. 102; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR MOMENTUM
BEAMS
DISSOCIATION
GROUND STATES
OPTICAL PUMPING
PERTURBATION THEORY
POLARIZATION
QUANTUM NUMBERS
RESONANCE
ROTATIONAL STATES
SPECTRAL RESPONSE
SPECTROSCOPY
STIMULATED EMISSION
VIBRATIONAL STATES